Answers to Your Most Common Car Questions
Find out more about our services, booking process and what to expect when you visit our workshop.
We’re always adding new FAQs so check back regularly. If you have a question you think we should include, let us know.
Engine Oil
What does engine oil do?
Engine oil lubricates, cleans, cools and protects your engine and all moving parts, reducing wear and keeping your car running smoothly.
Why should I change my engine oil?
Over time, engine oil loses its friction modifiers and cleaning agents becoming contaminated with acids and sludge. Regular oil changes prevent premature engine wear and reduce the risk of oil seal failures.
How often should I change my oil?
Normal driving (mostly highway): every 10,000 km or 6 months, whichever comes first
Severe use (short trips, stop-start traffic, high-speed driving): every 5,000 km or 6 months
High-performance, diesel, or turbocharged engines: every 5,000 km or 6 months
What grade of oil should I use?
We always use the oil grade recommended by your vehicle manufacturer. For most clients we recommend changing oil every 6 months or at least once a year – cheaper than replacing an engine!
Automatic Transmission Oil
Why change automatic transmission fluid?
Transmission fluid degrades over time and failing to replace it can lead to premature transmission failure. Changing the fluid and filter every 40,000–50,000 km can significantly extend transmission life.
How is the fluid and filter changed?
Depending on your vehicle, some transmissions have external filters while others require pan removal. We flush transmissions, hoses and filters and replace with new fluid at the same time.
Brake Fluid
What is brake fluid?
Brake fluid is hydraulic oil that transmits pressure to your brakes.
Why change brake fluid?
Brake fluid absorbs moisture which can cause internal rust, pitting and in extreme cases brake failure.
How often should brake fluid be changed?
We test moisture content annually. Most vehicles require fluid replacement every 2 years or sooner if moisture exceeds 3%.
Will I notice a difference after changing brake fluid?
If the fluid is overdue you may notice a firmer brake pedal with less travel. If fluid is maintained regularly braking feels the same.
Cooling Systems
Why does my engine need coolant/antifreeze?
Coolant prevents freezing in cold weather, raises the boiling point and protects against corrosion in your cooling system.
What happens if coolant is neglected?
Rust and corrosion can damage the radiator, water pump, hoses and even cylinder head gaskets leading to costly repairs.
How often should coolant/antifreeze be replaced?
Most vehicles: every 2 years. Some long-life coolants last up to 4 years. Replacement is also recommended if rust is visible or tests show low antifreeze levels.
How do you replace coolant?
We flush to remove all old fluid and replace it with the correct amount of new coolant.
Disc Rotors & Brake Pads
Why do you machine disc rotors when replacing pads?
Modern brakes generate high heat, which can warp rotors and cause pedal pulsing or brake shudder. Machining restores a smooth surface, ensuring brakes work efficiently and safely.
Are all rotors machined?
Rotors are measured before machining. If they’re below minimum thickness we recommend replacement.
Pro tip: Avoid washing hot wheels immediately after driving; rapid cooling can warp rotors.
Timing Belt / Cambelt
What is a timing belt?
A timing belt synchronises engine valves and pistons. Some engines use a timing chain instead.
Why replace it before it fails?
A broken belt can stop your engine immediately sometimes causing severe internal damage.
When should it be replaced?
Follow manufacturer recommendations. A general guide: every 5 years or 100,000 km, whichever comes first.
What does it cost?
Costs vary by make and model. Components like water pumps, pulleys and tensioners may need replacement at the same time for safety and cost-effectiveness.
Intermittent Engine Problems
Why does my car misfire or behave inconsistently?
Modern vehicles have complex electronics, sensors and wiring systems. Some problems may occur sporadically making diagnosis challenging.
Can you plug a tool into my car to find the problem?
Yes, we use advanced scan tools and lab scopes to capture faults when they occur. However intermittent issues may take time to trace.
How long will it take and how much will it cost?
It depends on the fault. We typically agree on a starting price and keep you updated as we diagnose.
Dashboard Warning Lights
Why do warning lights appear and stay on?
Lights like Check Engine, ABS, TRC, VSC or ALB are controlled by ECUs which monitor vehicle sensors and set fault codes when readings fall outside normal ranges.
How do you know what the fault is?
We use a diagnostic scanner to read ECU fault codes which helps us pinpoint issues.
What should I do if a warning light comes on?
Never ignore warning lights. Contact us immediately to determine if the vehicle is safe to drive and schedule a check.
Additional FAQs
Do you provide a WOF or vehicle inspection?
Yes, we can carry out Warrant of Fitness inspections and provide professional advice on your vehicle’s condition.
Do you use genuine parts?
We use either genuine manufacturer parts or high-quality aftermarket parts for all repairs and servicing. The use of second hand parts for some vehicles are used if the customer requests us to source them.
Do you offer courtesy vehicles?
Yes, if available we have a courtesy vehicle to keep you moving while we work on your car.
How do I book a service?
You can book online, call us or drop in to schedule a service at our Corunna Bay workshop.
Do you offer seasonal maintenance tips?
Yes! Our seasonal newsletters include advice and tips to keep your vehicle running safely all year round. See our News page for more information.